The "start" button is bad. I picked up a momentary switch from the auto parts store and wired it in to the right switch harness. The bike starts and runs perfectly again. I just need a more permanent solution, since this switch is not weather proof. I bought a used right switch assembly on E-Bay that will get me back to OE, but it's still almost 30 years old. I am thinking about trying to install the starter push button from a newer Nighthawk in the 1985 assembly. At least then I would have a new switch.

-Joe

Click to expand...

Would probably be better to go with new(er) switchgear if possible. My HawkGt had a killswitch from a Duc and a 1/4 turn throttle. 1/4 turn throttles are FUN.

That, my guess, is the problem. If it never moves, never gets used, likely the contacts are corroded and not passing current through. Using it keeps it clean.

I'd take it apart and first check it with a meter before doing anything else, then clean it thoroughly.

Click to expand...

The "Start" button was worn out. Cleaning it did nothing, but I was able to resolve the issue with a $5 momentary switch from the auto parts store, wired in place of the "Start" button. It is not weatherproof, but it's getting the job done for now.

I have purchased a used right side switch assembly, which hopefully has a good "Start" button. I am considering getting a new right side switch assy. from a later model Nighthawk, either to see if I can fit teh "Start" button from the new assembly into the old housing, or just use the new gear as-is.

Hey guys, new guy and recent lurker here. Taking my MSF next week and thinking of getting an 84 700s for my first bike. I'm 6'2 and 270, wondering if this bike would be a good fit?

Thanks!

Click to expand...

The S is a great bike. I've been riding for 36 years now, mostly what is now considered "Dual Sport". I picked up a gently used S this May and I absolutely love it. Around town, at 6k RPM and below, it is very well mannered. When you open the throttlewide and she hits 7k, the bike begins to accelerate very rapidly, this happens again as you pass 9k. Save that for a time when you have more experience and lots of open road ahead.

The S is a great bike. I've been riding for 36 years now, mostly what is now considered "Dual Sport". I picked up a gently used S this May and I absolutely love it. Around town, at 6k RPM and below, it is very well mannered. When you open the throttlewide and she hits 7k, the bike begins to accelerate very rapidly, this happens again as you pass 9k. Save that for a time when you have more experience and lots of open road ahead.

The 1985 CB650 is dimensionally almost exactly the same as a 1984-1986 Nighthawk S.

-Joe

Click to expand...

Thanks for the input! Going to check out an S in a couple weeks, once I do my MSF course. Wish me luck!

Thanks for the input! Going to check out an S in a couple weeks, once I do my MSF course. Wish me luck!

Click to expand...

Obviously, best of luck with the course. This has to be the most meaningful money you will ever spend on motorcycling. Protective gear is great and has its place, but riding smart is the best plan of all.

In your spare time, you may want to take a look at www.nighthawk-forums.com. There is a lot of good info there, much of which pertains to the CB700SC, aka Nighthawk S. It can give you some idea of what to look for in a used S and what to stay away from. I'm not affilated with that site, I just stumbled across it while searching for info on my '85 S. That board doesn't see that traffic that ADV does, but the members are pretty helpful just the same.